I bought the car used in 2017, Scirocco R (2013) 2.0 T FSI gasoline A/T, now at 66,000 km and supposedly APR Stage 2+ (but another garage told me it wasn't...don't know if this matters with my issue).
The turbo boost gauge is a Defi and reads in bar.
I noticed a few weeks ago while going up a small inclined stretch of the road a feeling of a bit of loss of power because I expected it to go up like it normally does with ease
but this time it wasn't and I quickly looked at the turbo gauge and the needle was like at 1 bar (15 psi) but I was only going maybe 60 km/hr and rpm was only at about 2000-2400.
Normally I just touch the pedal lightly and the car goes because it has a lot of power and torque so I'm used to not flooring it and pushing it hard just to get around. The turbo needle
almost never goes to 1 bar for me because I don't floor it and I don't need to race. Lately, even when I'm just accelerating gently from a stop / traffic light, the boost will read 0.5 - 1 bar
(10 - 15 psi) when I'm only pushing around 1800 - 2000 rpm and driving only 80 km/hr. I don't ever remember the needle go that high for such light driving. I'm not sure what is causing the
boost to go so high on such low speeds/rpm....it's more noticeable from a stop/traffic light as oppose to being at higher speeds.
No CEL despite still driving like this for weeks now. It drives for the most part fine, but I do feel like there's a loss of power (not as responsive or as much as I'm used to) especially from a stop and not as smooth when the needle goes up so high for just light driving.
I believe it may be a leak somewhere but I'm confused because if there was a leak, wouldn't it mean the pressure should be lower and not reading a lot of boost? My reading is showing the opposite, too much boost (or requesting too much boost) for such low speed.
This seems to only be when I am putting my foot on the gas. When I let it off, the needle reacts normally by going all the way back down to -0.8 bar or so, which I assume means no problem with the diverter valve (forge).
I think I will invest in the VCDS from rosstech they have for $199 and see if I can see live data on requested boost vs actual boost (something someone else advised to me).
Any other ideas what it might be? Should I take off my MAF sensor and drive around and see if drives better (maybe a dirty maf?), or could it be a bad N80 valve (if that might be related to this),
I already changed the charcoal canister. I also hear a hissing sound only when I accelerate at around 2000 or more rpms so I think it is a leak of some kind.
Another symptom I noticed was when I turn the AC on and sit at idle, the needle moves back and forth between -0.6 to -0.4 every second....it never used to sway back and forth like that even with AC on in the past. When I turn AC off, the needle calms down and sits steady at -0.7
The turbo boost gauge is a Defi and reads in bar.
I noticed a few weeks ago while going up a small inclined stretch of the road a feeling of a bit of loss of power because I expected it to go up like it normally does with ease
but this time it wasn't and I quickly looked at the turbo gauge and the needle was like at 1 bar (15 psi) but I was only going maybe 60 km/hr and rpm was only at about 2000-2400.
Normally I just touch the pedal lightly and the car goes because it has a lot of power and torque so I'm used to not flooring it and pushing it hard just to get around. The turbo needle
almost never goes to 1 bar for me because I don't floor it and I don't need to race. Lately, even when I'm just accelerating gently from a stop / traffic light, the boost will read 0.5 - 1 bar
(10 - 15 psi) when I'm only pushing around 1800 - 2000 rpm and driving only 80 km/hr. I don't ever remember the needle go that high for such light driving. I'm not sure what is causing the
boost to go so high on such low speeds/rpm....it's more noticeable from a stop/traffic light as oppose to being at higher speeds.
No CEL despite still driving like this for weeks now. It drives for the most part fine, but I do feel like there's a loss of power (not as responsive or as much as I'm used to) especially from a stop and not as smooth when the needle goes up so high for just light driving.
I believe it may be a leak somewhere but I'm confused because if there was a leak, wouldn't it mean the pressure should be lower and not reading a lot of boost? My reading is showing the opposite, too much boost (or requesting too much boost) for such low speed.
This seems to only be when I am putting my foot on the gas. When I let it off, the needle reacts normally by going all the way back down to -0.8 bar or so, which I assume means no problem with the diverter valve (forge).
I think I will invest in the VCDS from rosstech they have for $199 and see if I can see live data on requested boost vs actual boost (something someone else advised to me).
Any other ideas what it might be? Should I take off my MAF sensor and drive around and see if drives better (maybe a dirty maf?), or could it be a bad N80 valve (if that might be related to this),
I already changed the charcoal canister. I also hear a hissing sound only when I accelerate at around 2000 or more rpms so I think it is a leak of some kind.
Another symptom I noticed was when I turn the AC on and sit at idle, the needle moves back and forth between -0.6 to -0.4 every second....it never used to sway back and forth like that even with AC on in the past. When I turn AC off, the needle calms down and sits steady at -0.7